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so will Lutz be introducing another S54 Custom Turbo set-up to the market soon enough??? With a Manifold as sweet looking as that tubular you guys have created I can deffinately see lots of interest coming your way!!!

Completed intake piping, again full 4" turbo to filter accompanied by a 4" duct directing colder outside air towards the filter

Fitted

And sorry for the lack of updates this past week, last Thursday my TIG decided to stop working on AC (aluminum setting for a TIG). I sent it back for warranty repair which is 3-4 weeks out, we couldn't wait that long without it so after a quick discussion it was time for an upgrade! Here she is, just delivered yesterday afternoon and put to work today to complete what's shown above!

Heres a PM I recieved from someone on Bimmerforums. Its relavant cause the guy mentions Shawns work.

"Yeh from your build thread i noticed that your guys shop was good and he is a great fabricator. I may have to take you up on some other parts after i unload my NA parts on the forum. And i will check out the link when i have a chance to get on the computer later. Take some build pics for me on the new car too please!!! I'll recommend hit you up later!

I'm just wondering if anyone has stuck a MAP sensor pre-turbo and watched what's going on, then correlated that to the shift in efficiency occurring across a compressor map?

Well....I kind of answered my own question there. Most of the turbo kits out there use a turbo that doesn't have a compressor map available. (Precision,FP, etc)

My point is that if the inlet restriction was causing the turbo to have to work harder (Spin the compressor wheel faster) to move air, you could be forcing the compressor to be working farther outside of it's high efficiency range at higher RPMs.

Some will catch what I'm saying....some won't. It doesn't bother me, as this is just a point of a discussion.

The pre-turbo intake plumbing and filter size on Trevor's car is pretty good, but I'd love to see an even larger filter element. Really easy to say, much harder to do....

I'm just wondering if anyone has stuck a MAP sensor pre-turbo and watched what's going on, then correlated that to the shift in efficiency occurring across a compressor map?

Well....I kind of answered my own question there. Most of the turbo kits out there use a turbo that doesn't have a compressor map available. (Precision,FP, etc)

My point is that if the inlet restriction was causing the turbo to have to work harder (Spin the compressor wheel faster) to move air, you could be forcing the compressor to be working farther outside of it's high efficiency range at higher RPMs.

Some will catch what I'm saying....some won't. It doesn't bother me, as this is just a point of a discussion.

The pre-turbo intake plumbing and filter size on Trevor's car is pretty good, but I'd love to see an even larger filter element. Really easy to say, much harder to do....

I think we could all benefit from a bigger filter element, but where? HPF had to route theirs down low for the "Stage 5" and thats not great for streetability.

Quote:

Originally Posted by PEI330Ci

I'm guessing he ran the car without the pre-turbo plumbing installed.

Jason told me he simply removed the element and opened the hood and made an extra 50rwhp.

I think we could all benefit from a bigger filter element, but where? HPF had to route theirs down low for the "Stage 5" and thats not great for streetability.

I think those ipad display screens , washer tanks, air pumps, fog lights, AC...and all that other stuff you don't need is in the way. Why is having a filter that is low to the ground bad for streetability? You could cut some of the intake pipe off to squeeze a bit larger of a filter on that z4.

I think those ipad display screens , washer tanks, air pumps, fog lights, AC...and all that other stuff you don't need is in the way. Why is having a filter that is low to the ground bad for streetability? You could cut some of the intake pipe off to squeeze a bit larger of a filter on that z4.

I would think an open air filter element that's close to the ground could potentially suck in water?